Machine for rolling the bases of cartridge cases



m 939 A. wow 2,184,030

mcumn FOR ROLLING 'I'HIJ msms 0F cmwnmw GASES Filed May 11, 1956 5 sheets-sheet 1 /n venfbl:

M. Wrh

19, 1939. A. WOLFF 2,184,030

MACHINE FOR ROLLING THE BASES 0F CARTRIDGE CASES Filed May 11, 1956 5 Sheets-Sheet 2 Dec. 19, 1939. A. WOLFF 2,184,030

momma FOR ROLLING THE BASES 0F CARTRIDGE CASES Filed May 11, 1936 5 Sheets-Sheet 4 -//'7 Vania/ A. WOLFF Dec. 19,- 1939.

MACHINE FOR ROLLI NG THE BASES 0F CARTRIDGE CASES Filed May 11, 1936 5 Sheets-Sheet 5 inte r l Dec. 19,1939 2,184,030

lTED srA'rss PATENT OFFICE MACHINE FOR ROLLING THE BASES OF CARTRIDGE CASES Albert Wolill, Berlin-Dahlem, Germany, asslgnor to Deutsche Wafienund Munitionsfabriken Aktiengesellschaft, Berlin, Germany Application May 11, 1936, Serial No. 79,187 in Germany March 28, 1935 d Claims. (GI. 80-40) "lithe invention relates to a control for base controlling the rolling ball, Fig. a further pair rolls for rolling the bases of cartridge cases and of valves serving for initiating the downward or its object is to make the whole of the working upward movement of the rolling ball and f r operations automatic, preferably by means of a controlling a Shaft for e olling cylinder by ll fluid under pressure, I way of a special mechanism, Fig. 6 a still further 5 The heretofore customary manual attendance pair of valves controlling the operation of said of the base rolls requires firstly an exceptional roll slide and said bayonet closure, and Fig. 7 expenditure of force and secondly considerable the driving means for said bayonet closure. skill ii the various operations of the machine are According to Figure 1, the hydraulic control to be carried out continuously in succession withis driven by a single pump and according to 10 out considerable loss of time. In order to reduce Figure 2 by two pumps .wlth constant delivery the labours of the attendants as far as possible quantity for the fast speed of the roll slides, a and to increase the capacity of the machine, it is regulating pump, a pump for the latter with a proposed according to the invention to initiate delivery quantity which can be adjusted in a. 35 the various working operations of the machine continuous manner and a further high pressure 10' either in succession or together by means of an pump for the working operation. automatically operating hydraulic control. Ac- In the constructional form of the control cording to the inventionythe individual working according to Figure 1, the cases t and u to be operations, such as inward movement of the roll machined are fixed in rolling or receiving cylingn slide, upward movement of the rolling ball, lockders which are moved towards each other until ing of the bayonet joint for the slide, movement the bases of the cases come into contact with the 'ol? the slide until the commencement of rolling, rolling ball 12, which is moved up and down starting of the rotary movement of the base roll, during the rolling op ration, the rolling or relowering starting of the rotary movement of the celving cylinders being adjusted axially by a mg base roll, lowering and raising of the rolling small amount. The adjustment of the rolling or balls during the rolling operation, unlocking of receiving cylinders is effected by means. of a the bayonet joint, engagement of the roll slide guide spindle I00 which is coupled to the receiviast speed and the moving part of the slides are ing cylinders by means of a bayonet joint 2:, Figcontrolled. or initiated or even carried out absoures 3 and 7. The base roll is driven by means lutely automatically by hydraulic means by piston of a variable speed gear assembly y, I02, I03. strokes or the like, which in their turn are con- The rolling ball 12 is mounted in a cage adapted trolled by special valves, cocks, pistons or the to be raised and lowered by the rack w. The like, and also mutually, in such a manner that rack is driven pa y y the ev ble a SB and the next movement in the Working cycle of the also by the piston n.

base roll is initiated in a positive manner only At the right-hand side of the variable speed 35 after or by the termination of the preceding gear a: there is provided a worm-gear drive for movement. the pinion co-operating with the rack w, said in order that the attendants shall have comworm-gear drive being reversible by action of the plete control of the actual rolling operation control lever I01. further steps are taken according to the inven- The other controlling and driving elements of 40 tion for controlling the automatic raising and the base roll according to Figure 1 comprise a lowering of the rolling balls as rapidly as desired clutch IOI for the rotary movement of the left by engagement by hand and also for repeating hand rolling or receiving cylinder, a clutch I02 this as often as may be desired. for driving the guide spindle I00 at one speed, a is The drawings show in Figures 1 and 2 conclutch I03 for driving the guide spindle I00 at is structional examples of a hydraulically conanother speed, the actual main driving shaft I00, trolled base roll according to the invention, the the clutch I05 which is engaged or disengaged by structure of the machine in question being shown the control piston shown below it in the drawings, diagrammatically. the control levers I06 for the variable speed gear to Figs. 3 to 7 are detail views, partly in section assembly y, I02, I03, for moving the controlling so of actuating and control members forming part or receiving cylinders together and apart, a of my present machine, Fig. 3 showing in parfurther control lever I01 for the upward and tlcular a bayonet closure, Fig. 4 a pair of valves downward movement of the rolling balls 12 by serving for the actuation of said bayonet closure means of the toothed wheel and toothed seggg for throwing-in and out the roll slide and for ment w, a cam disc I08 having two exams for movementso,f; the push-rods 'of'-.-the= pistons; at 55:1 10

g. eltherthrow-in clutchIUZ and throw-out clutch;

.'and,3.I ,-the couplingrod I'- will be displaced to 103 or. to throw-in clutch '"I 03 and simultaneously .1 .therewith throw-out; clutch 102.; The clutches The. main I04 is continuously .rotatedeven. ininoperative condition of the machiner- A-disklI-ismounted on said shaft I04.

. tate,.w hile shaft VI is If clutch I05 is thrown-in. also'the large bevel gear' wheel ofithe variable speed gear 3 will ropositively driven through 1/ fromthe shaft-I04,- In-the drawings this con-' nectionis indicated by asmall bevel gear HI fast Y :onthe driving disk IV. The latter is connected I with wheel V fast on shaft VI by a chain or the like. In like manner'the sprocket wheel V'HI is rotatedby a chainfrom the sprocket wheel VII. Upon rotation of shaft VI also the one half ofclutch IOI will rotateidle therewith. After throwing-in said clutch IOI the rolling cylinder with the cartridge shell therein will also be rotated.

The controlling operation according to Figure l proceeds as follows:

A pump continuously forces oil under pressure from a supply tank into the conduit I.

Branching off the latter is the conduit 2 for the control valve 11 for engaging and disengaging the main clutch I05. The oil conduit 3 leads by 4 to the cylinder of the main clutch I05, whereby the base roll is started. This startingis eflected by depressing the control button m, Figure 4, after throwing over the lever M0 on the piston d.

The conduit g'Ito the valve a is thereby opened and the latter moves into the-left-hand position. The branch conduit 8 connects the conduit 6 with the cylinder-0 where a catch pin -is dis-.

engaged and releases the control piston g. From the pump 0 the oil conduit I0 leads by way of I to the valve 0, and furthermore the'conduit II leads from the valve 0 to the valve a. The oil supply-moves the valve 11 into its left-hand position and hence opens the conduit I3 which leads to the valveb by way of 14 thus moving thevalveb into its left-hand position. The movement of the valve 2) into the left-hand position opens the conduit l which in its turn, by way of the supply conduit I6, puts under pressure the piston I6 for the inward movement of the right-hand-roll slide and moves the latter.

At the same time, the piston 12 is put under oil pressure by I4 by way of the supply conduit I1. The piston moves upwardly and carries the ball 22 into the upper position.

Branching ofi I5 is the supply conduit I9 which reverses the pressure valve is, whereby pressure liquid is supplied thereto and the valve b is brought into the right-hand position. The conduit 22 is thereby put under oil pressure; This conduit leads to 23 and by moving forward the piston there situatedeflects the closing of the bayonet joint 2.

The bayonet joint having been closed and the rolling or receiving cylinder having been coupled to the guide spindle I00, the conduit 24 is also conduit 30. leading to 3I opening the conduit the conduit throwing over a control lever.

hand rolling or receiving cylinder is set in me- -,tio n the control discm will be driven by the ..latter, by way of agear r5 and the dog p an the said disc forces the piston e back, whereupon the is opened. The plunger of theimpulse cylinder situated at that place is r'no'v'ed tothe centre, the control rod is pushed back a'nd'thereb'y therolling or receiving cylinder movement initiated by way of 25 is stopped.

A branch 'of the oil conduit from to 32 moves "the piston of 32 forward; thereby switching on a light signal q for indicating that the actual rolling operation is now commencing.

vAfter opening the conduit 30 leading to 3|,

.=the conduit 3d leading to the cylinder for starting and stopping the rotary movement of the rolling or receiving cylinders is also opened by -way of, 33. The said rotary movement is started by the piston being pressed downwardly.

w 5 Uponrotation of the receiving cylinders, the

conduit 35 leading to 36 is also opened and presses. the valvec. tozthe left. The conduit 31 leading to 30 is thereby connected to the pump 0.

The control valve i is pushed downwardly by a dog when the ball slide is at the top, thereby 39,- which leads to 40 and actuates the plunger of the impulse cylinder for the initiation of the downward movement of the ball. w

The conduit 4| leads to the control valve 21 which after the downward movement of the ball has taken place is moved by a dog, whereupon 42 leading, by way'of 43 to the plunger of the impulse cylinder for the upward movement of the ball is opened. The conduit 45 leading from the piston d by way of 44 to the piston-,9. is in communication with 46 when at the endoftheupward movement of the ball, the control valve g has been moved downwardly by The oil pressure is thereby transferred to 41, the plunger of the impulse cylinder is moved to the centre and the ball slide remains in its upper position. Branching off the conduit 46 is a conduit 48 leading to the control valve 1 by way of 49. It is in communication with 50 and by way of 52 actuates the plunger of the impulse cylinder for starting the moving apart of the roll slides, and by way of 5| actuates the piston for switching off the light signal q.

The conduit 53 is now opened. This conduit branches off to 54, stops the rotary movement of the receiving cylinders and by way of 55 actuates the plunger of the impulse cylinder for the rapid movement apart of the roll slides. The conduit 58 branching off the valve ,f is opened by the adjustable dogs on the control disc 1', Figure 5, and by way of 51 moves the plunger of the impulse cylinder to the centre, thereby terminating spring-controlled piston valve a to move to the right is thereupon opened. Branching oif the conduit 56 is a pressure conduit leading by way of W to GI! and serving for the disengagement of the clutchfor the ball slide, the ball slide being thereby released for rapid movement. The valve situated in the right hand position opens the conduit to M which leads to 63 and serves for the top-speed downward movement of the ball slide.

At the same time, the oil pressure of the conduit 6d branching ofl. 62 effects the opening of the bayonet joint. The oil conduit 65 which likewise branches off 62, moves the valve 0 into the right-hand position, and the conduit t6 branching ofi 64 moves the valve b into the lefthand position. After the conduits 63, 6d, 6'5 and 66 have been put under pressure, the flow from 61.

to M is also opened and, by way of 69, the piston for moving apart the roll slide is pushed back by the admission of oil under pressure.

According to Figure 2 gear pumps iii and it with constant delivery quantity are employed for actuating the fast speed. The gear pump it serves for the working pressure or maximum pressure for operating the control piston for moving the rolling or receiving cylinders inwardly, while the gear pump N is intended for .hii

1 is shown at lit.

The pressure liquid is conveyed to the several control pistons by means of the pumps M, H, 13, i l and iii, the pumps it and H being constructed to operate with a large quantity of pressure liquid at small pressure to operate the pistons serving to operate the respective operating members at accelerated speed, while the pump 13 is constructed to operate as high-pressure pump with a small quantity of pressure liquid. The pump it serves only as a feed pump for the regulating pump it, the latter forwarding the pressure liquid supplied thereto in full or reduced quantity to the piston 8!, in accordance with the adjustment of pump it. In order to bring about an accelerated motion, for instance when moving the slides into rolling condition, at first the pumps it, ill and i3 jointly supply pressure liquid at a. small pressure to the cylinders 82 and it, in accordance with the small resistance to be overcome in this case. In operative condition of the slides the pressure of the operating liquid is raised through pump it, while pumps in and ll are rendered inoperative by the lifting of the valves lid and 85. During accelerated motion of the slides the pumps it and I5 are running idle past valve 88. By action of the aforementioned raised pressure the valves 98 and H5 are opened and the pistons 86 and 81 lifted, thus causing insertion of the clutch to rotate the rolling cylinders; By way of a branch conduit the valve M is reversed with the result that the pumps H and i5 supply pressure liquid to the cylinder M to produce motion of the ball slide during the operation of rolling. This motion of the ball-slide upward or downward is initiated by the valves 89 and 90 and by the distributing valve 9|.

The course of the individual control operations for the upward movement of the ball slide for moving the rolling slides inwardly and outwardly, for moving the rolling slides into the operative position, for moving the rolling slides apart and for the downward movement of the ball slide is as follows:

The upward movement of the ball slide is effected by bringing the main valve 16 into the position shown in solid lines by manipulating the control lever 11. The pressure conduit from the gear pump to the main valve '16 by way of the valve 18 is thereby opened. Likewise, the pressure conduit from the gear pump 'H by way of the valves 19 and 80 and the pressure conduit from the high pressure gear pump 13 to the main valve 16 by way of the valve 80 are opened. The ball slide piston 8| and hence also the ball slide are thereby moved upwardly.

For moving the roll slides inwardly, the corresponding control pistons are operated with low pressure fluid, this being brought about by mov- 'ing the hand lever IT on the main valve 16 into the first position from the left. The pressure conduit from the gear pump 10 is thereby closed by way of the main valve 18, whereby the control piston oz for the left-hand rolling slide is put under pressure and causes the latter to move inwardly. In the same manner, the pressure conduit from the gear pump H and I3 is made operative, whereby the right-hand rolling. slide iasamoved inwardly by means of the control piston The movement oi the rolling slides into the operative position is efl'ected by means of high pressure, the gear pump 10 being first disconnected by way of the valve 84 after the inward movement of the left-hand rolling slide, and thereupon after the inward movement, of the right-hand rolling slide, the gear pump H is disconnected by way or the valve 85, whereupon the gear pumps Ill and H run idle. After the increase in pressure, the rotary movement of the right-hand rolling or receiving cylinder is initiated by the valve 86 and that of the left-hand cylinder by the valve 81. Thereupon, the noload valve lid is reversed by the valve 81, whereby the pressure conduit from the gear pump M to the valve 88 and to the regulating pump is opened and simultaneously therewith the noload valve til operates the control valves 89 and 90, whereupon the pressure conduit of the first control valve reverses the valve 9|, so that the pressure conduit from the regulating pump i5 moves the ball slide downwardly, whereby the valve 89 is released and, in afurther operation, the valve 90 is also moved. The reversal of the valve 90 thereby produced efifects the reversal of the valve 99, the consequence of which is that the ball slide is again moved upwardly in the working stroke. Due to the movement of the valve 92 by hand by means'of the control lever in connection therewith, the rolling or receiving cylinders are moved apart bymeans of the conduit 93 or towards each other by means of the conduit 94 in order to maintain the suitable degree of rolling, this being attained by adjusting the stops 95.

After completion of the rolling operation, the rolling slides are now moved apart as far as the outer stops 96 provided for that purpose, this being eifected by the pressure conduit of the gear pump 10 being connected by way of the main valve E6 to the righthand end of the control piston 82, whereby the left-hand rolling slide is caused to move outwardly. At the same time the pressure conduit from the gear pumps 70 and H is connected by way of the main valve I6 to the left-hand end of the control piston 83, whereby the right-hand rolling slide is caused to move outwardly. By pressure being conducted to the right-hand end of the control piston 82, the

rotary movement for the left-hand rolling or receiving cylinder is disengaged and by pressure being conducted to the left-hand end of the control piston 83, the rotary movement for the right-hand rolling or receiving cylinder is disengaged.

When after the moving apart of the rolling slides, the latter abut against the outer stop 96, the control operations are repeated for initiating the movement of the rolling slides by high pressure in the working position, that is to say, the gear pumps 10 and H are disconnected by way of the valves 84 and 85. The ejection of the rolled cartridge case base, forming no part of the present invention, is effected by co-operation of the high-pressure pump 13. After the ejection of these cases, the. main valve 16 seen from the left-hand is rotated into the fourth position shown in the dotted lines, that is to say into the right-hand end position, thereby initiating the reversal to downward movement of the ball slide at fast speed. This purpose is served by the pressure conduits coming from the gear pumps v ill, H and 13.

Apart from the valves already mentioned, the following further valves are employed according to Figure 2. The pre-tension valve 98 serves for allowing the starting of the rotary movement by means of the piston 81 and the movement of the no-load valve 88 to take place only after a suitable rise in pressure, while the resistance valve $9 maintains a back pressure for reliable guiding'of the ball slide piston 8|. Furthermore a non-return valve III is provided for preventing oil under pressure from flowing away during the fast speed strokes of the ball slide. The maximum valve H2 serves for limiting the degree of pressure of the pumps 14 and i5, and the reaction valve H3 serves for relieving the feed pump 15 of the generation of pressure and for transferring the generation of pressure to the gear pump 14. A further maximum valve for limiting the pressure is provided at I IS. A nonreturn valve H4 is provided for preventing the idle running of the ball slide cylinder BI, and the valve H5 is provided for starting the rotary movement by means of the piston 85 only after a corresponding increase in pressure.

.Motion is imparted to the piston 8| at acceler- I ated speed by means of the pumps HI and Ii by on the slide.

way of the main valve I6 which is properly ad justed by hand. Upon adjusting said main valve to operate the roll, the piston 8| is operated at high pressure by the pumps 14 and 15, a regulation without steps being eflected by varying the quantity of liquid supplied by the pump 15.

In the hydraulic control shown in Figure 2, no

mechanical control members are employed apart from the adjusting levers 91 and H for the valve 92 and for the main valve 16, respectively, and the push button for the valve 3i.

Referring now more particularly to the detail Figures 3 to 7, according to Fig. 3 the part I of the piston operated by conduit 24 is connected to ck XII imparting rotation to the pinion Z a nut i I! connected thereto, as indicated t the right-hand side of said pinion. Said nut is provided with a number of projections H8 which in inoperative condition of the bayonet closure engage with properly shaped recesses H9 As soon as the collar I20 on said ut ill abuts against the part IX of said slide, the axial displacement is completed and the bayonet closed. Closure of the bayonet is effected upon rotation of said pinion Z and said nut through an angle of about 60 degrees, the projections H8 having now fully entered said recesses H9. In closed condition of the bayonet the roll slide moves forward or backward in accordance with the condition of clutches I02 and I03.

Fig. 4 shows how the connection between conduits and 46 is established by means of the two valves 01 and g by swinging the levers I09 and H0. For the sake of clearness the conduits 28, 44, 2, 3, 5,6 and H0, as well as the push button m are likewise indicated in accordance with Fig. 1.

The; construction and arrangement of the valves e and f is shown in Fig. 5. According to Fig. 5 the rack 1" is fast on the roll slide and serves to transmit the reciprocating motion of the latter to the disk 1'. Fig. 5 also shows the conduits 29 and 30 connected to valve e, the conduits 49, and 56 connected to valve 1; as well as the dogs p on the disk 1', all in agreement with Fig. 1.

Fig. 6 shows the construction and connections of the valves h and i which serve to operate the rack w for the ball '0. Connections between said rack w and the disk I08 is effected by a gear wheel I21 and a pinion I22 on the axle of said disk. In Fig. 6 the conduits M, 62 and 38, 39 for the valves h and i are likewise shown in agreement with Fig. 1.

Fig. 7 shows the shaft I00 with the pinion Z nor'mally loose thereon, said pinion being driven by the rack XII which on its part is driven by piston I, the latter being supplied and operated by conduits 23 and 64, the conduit 24 leading to 25 as shown in Fig. 1 and coming under pressure after piston i has arrived at its end position.

The examples merely show certain methods of constructing the hydraulic control device for a base roll. The individual control elements may be constructed, arranged and connected together in various ways. The idea of the invention would not be altered in any way if compressed air were employed as operative medium instead of oil under pressure.

Instead of employing a medium under pressure, such as oil under pressure or compressed air, the whole control may be effected electrically or mechanically.

I claim:

1. An automatic machine, said machine including a pair of roll-slides, a rolling ball, and a bayonet joint for said slides, automatic control means for said parts consisting of power mechanisms for imparting inward and outward movementtosaid rolling ball and for locking and unlocking said bayonet joint, and means linking said mechanisms whereby to initiate a movement of one after completion of a preceding movement of another.

2. Automatic machine as specified by claim 1, said machine further including additional manual control mechanism independent of said interlinked control means, said additional man'- ual control mechanism being arranged to control said rolling ball and said roll-slides to regulate speed and direction of movement thereof and to repeat at will rolling movement thereof independently of said predetermined sequence due to the interlinking of said actuating mechanisms.

3. Automatic machine as specified by claim 1, the automatic control means includinga pressure medium feed pump, a cylinder and plunger for imparting upward and downward motion to said rolling ball, a. conduit interconnecting said lid Ziiit up with said cylinder and plunger, a control button for controlling said conduit to supply pressure medium Mom said pump to said cylinder and plunger for lrnpartingupward movement to said rolling ball.

i. Automatic machine for rolling the bases of cartridge cases, said machine including a rollslide, a driving spindle therefor, a bayonet joint inserted therebetween, a pressure medium teed pump, a cylinder and plunger for locking and unlocking said bayonet joint, a conduit interconnecting said pump and said cylinder and plunger and means to open said conduit including an impulse cylinder. 1

5. Automatic machine as specified by claim 1, including a, source of power, a main spindle adapted to initiate the working steps of said machine, a hydraulic cylinder and plunger, a

second hydraulic cylinder and plunger, a conduit connecting the cylinders, means to actuate one plunger to open saldconduit to supply fluid to the other cylinder, movement of the plunger of said second cylinder being adapted to engage said main spindle and said source of power.

ii. Automatic machine as specified by claim 1, including a. piston-operated ball-slide associated with the rolling ball and adapted tov impart thereto alternately downward and upward movement, a valve mechanically controlled by said loaii -slide to open in downward position of the latter a conduit leading to said piston-operated talnalide, said valve controlling said conduit to initiate upward movement of the balhslide and therewith of said rolling ball.

7. An automatic machine for rolling the bases of cartridge caseasaid machine including a ballslide slidable in upward and downward direction. roll-slides carrying receiving cylinders and adapted for rotary and alternate outward and inward movement, an impulse cylinder and plunger for terminating said outward movement of said roll-slides and said receiving cylinders, a valve controlling the top speed downward'movement of said ball-slide, a conduit open in cen-' tral position of said impulse cyilnder and plunger and leading towards a catch-pin on said valve to cause the latter to move into position for said top speed downward movementoi said ball-slidaconduits for releasing a clutch associated with said ballslide, thereby releasing the latter for rapid motion.

8. An automatic machine for rolling the bases of cartridge cases, said machine including rollslides, a guide spindle, a bayonet joint for coupling a roll-slide to said guide spindle, a cylinder and plunger for operating said bayonet joint, a second cylinder and plunger for initiating rotation of said guide spindle and moving together said roll slides, a conduit connecting said cylinders and means to open said conduit on movement of the first plunger.

All-BERT WOLFE. 

